The TeraFlex JK FlexArm system can be added to any existing suspension lift. It includes all lower and upper FlexArms. FlexArms allow custom pinion and caster angles to be set for proper alignment, they also are used to re-center the axle in the wheel well for proper suspension movement.

TeraFlex set the standard in Wrangler performance with the adjustable FlexArm that offered performance features never before seen. They now have delivered the next generation of control arms and components with the Monster Series HD Rod Ends. TeraFlex designed a superior FlexArm that addressed and solved some of the limitations of the original Standard FlexArm. The new Monster FlexArm offers superior tubing strength and the largest interchangeable and rebuildable ends ever.